If f(x)=x^2+1, find and simplify:
(a) f(t+1)
the t^2+2t+2
i do not understand how to workout the problem and get this answer. !

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1

Asphere has a diameter of 10 in. what is the volume of the sphere?

The equation represents the function f, and the graph represents the function g. f(x)=3(5/2)^x determine the relationship between the growth factors of f and g. a. the growth factor of g is twice the growth factor of f. b. the growth factor of f is twice the growth factor of g. c. the growth factor of f is 2.5 times the growth factor of g. d. the growth factor of f is the same as the growth factor of g.